/* DexBlock.java
 *
 * Copyright 2012 Ross Bamford (roscopeco AT gmail DOT com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. 
 */
package com.roscopeco.deelang.runtime;

import dee.lang.Block;
import dee.lang.DeelangObject;

public abstract class DexBlock implements Block {  
  final DexBinding binding;
  final Object[] closedLocals;  
  public boolean inScope;
  
  protected DexBlock(DeelangObject self, DexBinding binding, Object[] locals) {
    this.binding = binding;
    this.closedLocals = locals;
    this.inScope = true;
  }
  
  public void invoke() {
    if (!inScope) {
      throw new IllegalStateException("Block called when out of scope");
    }
    invoke(binding.getSelf(), binding, closedLocals, null);
  }
  
  // N.B. Args is not currently used, but may in future support block args
  /* N.B. Various things rely on this method signature's argument order! */
  protected abstract void invoke(DeelangObject self, DexBinding binding, Object[] locals, Object[] args);
}
